<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="utf-8">
        <title>D3: Setting path fills</title>
        <script src="//d3js.org/d3.v3.min.js"></script>
<script src="//d3js.org/topojson.v1.min.js"></script>
        <style type="text/css">
            /* No style rules here yet */       
        </style>
    </head>
    <body>
        <script type="text/javascript">

            //Width and height
            var w = 500;
            var h = 300;

            //Define map projection
            var projection = d3.geo.albersUsa()
                                   .translate([w/2, h/2])
                                   .scale([500]);

            //Define path generator
            var path = d3.geo.path()
                             .projection(projection);

            //Create SVG element
            var svg = d3.select("body")
                        .append("svg")
                        .attr("width", w)
                        .attr("height", h);

            //Load in GeoJSON data
            d3.json("china.json", function(json) {

                //Bind data and create one path per GeoJSON feature
                svg.selectAll("path")
                   .data(json.features)
                   .enter()
                   .append("path")
                   .attr("d", path)
                   .style("fill", "steelblue");

            });

        </script>
    </body>
</html>